We have
obtained this artefact recently, and exchanged it for our:
Mischgerät to V2

Front panel Korfu
receiver type E351

This is a very
rare set, of which I know only existing three, one in a depot of the British Science
Museum, one owned by Horst Beck (Germany) and this set. It is possible that one
or a few have survived unknowingly. I guess, it might have been manufactured
about the break of 1944/45. The Korfu project was executed by Blaupunkt

Curious is,
that all documentations found, are pointing to the predecessor type(version) which carries
the same type-number, though, with no doubt, is different. Frequency ranges can be
changed by exchanging the front-end plug-in, shown in the centre of the
front-panel. Our unit runs from λ 12 cm to 8 cm
(2500 MHz - 3750 MHz). The used first local-oscillator magnetron, for all
versions, is: RD2Md or RD2Md2 (see
curious archive displays)(the
principle of this tuneable magnetron is explained in my:
Airborne
radar paper at page 24). Korfu was fit to monitor: amplitude-
and FM modulated signals.

The two coaxial connectors are more or less equal to
British H2S standard. Be it, that its measures are metric. This connector type
was called "Rotterdam-Stecker". The connector on the left-hand side is to be
connected (linked) onto FM 351 (Frequenzmesser = wave meter), the right one is to
connect the directional antenna (DF).

An open question to me is, how the wave meter type 351
could be linked onto the receiver? As all known FM 351s, do not
have provisions as to connect it onto a coaxial cable directly. Although, there
are sings that an additional circular 'horn like adapter' was used.

Top view lid
opened

The cylindrical
device (drum) in front, is the front-end cavity. All "steel valves" are type
EF14, which has a high slope factor (as to obtain wide bandwidth, owing to a
high ratio of: S/C). The two "Luftwaffe" valves just
behind the three brown coaxial cables are both type LG1, which is a 'dual diode' for very high
frequencies (>500 MHz). First IF is 60 MHz, the second IF 40 MHz.

Top view from left.

Most wiring is
of pvc, which was quite often used after say 1942, for
high-end GAF apparatus.

**According
to Fritz Trenkle in "Die deutschen Funkmeßverfahren bis 1945" (Motorbuch Verlag
1979), p.134-138), it might have been type 351 Z, but he is very vague in this
respect. Maybe owing to lack of reliable references. It is also not clear, whether, among Blaupunkt, also Siemens was involved. One would expect also a so-called 'FuMB
number', though, I could not find any information on this